The term existentialist philosopher is identified in base64 scheme by the sequence ZXhpc3RlbnRpYWxpc3QgcGhpbG9zb3BoZXI=, while the MD5 signature is equal to 986bd69f8c1d64c0c5f8957cbe2b3525. The ASCII encoding of existentialist philosopher in hexadecimal notation is 6578697374656e7469616c697374207068696c6f736f70686572.